Bose-Einstein condensation in antiferromagnets at low temperatures

27th International Conference on Low Temperature Physics

Alakshin, E.M.^1 ; Bunkov, Yu M.^1,2 ; Gazizulin, R.R.^1,2 ; Isaenko, L.I.^3 ; Klochkov, A.V.^1 ; Safin, T.R.^1 ; Safiullin, K.R.^1 ; Tagirov, M.S.^1 ; Zhurkov, S.A.^3

Kazan Federal University, Kremlevskaya 18, Kazan

420008, Russia^1

Institut Neel, CNRS, Universite Joseph Fourier, Grenoble

F-38042, France^2

V.S.Sobolev Institute of Geology and Mineralogy, SBranch RAS, Novosibirsk

630090, Russia^3

关键词: Antiferromagnets;    Easy plane;    Fid signals;    Low temperatures;    Magnons;    Quantum state;    Superfluid phase;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/568/4/042001/pdf
DOI  :  10.1088/1742-6596/568/4/042001

来源: IOP

【 摘 要 】

The Bose-Einstein condensation (BEC) was predicted by Einstein in 1925 and this effect is characterized by the formation of a collective quantum state, when macroscopic number of particles is governed by a single wave function. The BEC of magnons was discovered experimentally in superfluid phase of3He. In the present work we report our progress on the BEC of magnons investigations in solid antiferromagnets at low temperatures by magnetic resonance methods. The duration of the FID signal in two samples of easy-plane antiferromagnets CsMnF3has been studied. Obtained data confirm the formation of magnon BEC in antiferromagnet CsMnF3.